86651387 has 4 divisors (see below), whose sum is σ = 87748320. Its totient is φ = 85554456.

The previous prime is 86651359. The next prime is 86651413. The reversal of 86651387 is 78315668.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 86651387 - 2¹² = 86647291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86651347) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 548348 + ... + 548505.

It is an arithmetic number, because the mean of its divisors is an integer number (21937080).

Almost surely, 2^86651387 is an apocalyptic number.

86651387 is a deficient number, since it is larger than the sum of its proper divisors (1096933).

86651387 is a wasteful number, since it uses less digits than its factorization.

86651387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1096932.

The product of its digits is 241920, while the sum is 44.

The square root of 86651387 is about 9308.6726765957. The cubic root of 86651387 is about 442.5121228338.

The spelling of 86651387 in words is "eighty-six million, six hundred fifty-one thousand, three hundred eighty-seven".